IC BLOCK DIAGRAM
DME32
19
MM74HCU04SJX (XY070A00)
TC74HC04AF (XS993A00)
HD74LVC04FP (XW905A00)
Hex Inverter
MAIN:
PNR:
MM74HC14SJX (XW104A00)
Hex Inverter
MAIN: IC19
74VHC32SJX (XY306A00)
Quad 2 Input OR
MAIN: IC3, 5
MM74HC74ASJX (XY153A00)
Dual D-Type Flip-Flop
MAIN: IC17, 22
TC74HC123AF (XN242A00)
Dual Retriggerable Single Shot
MAIN: IC41
TC74VHC138F (XT015A00)
3 to 8 Demultiplexer
MAIN: IC64, 65
MM74HC151SJX (XY308A00)
8 to 1 Data Selector
MAIN: IC26, 62, 63
TC74HC153AFEL (XY309A00)
Dual 4 to 1 Data Selectors
MAIN: IC27
MM74HC157SJX (XY310A00)
Quad 2 to 1 Multiplexer
MAIN: IC108, 109
IC16, 25
IC103
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
GND
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
1
2
3
1A
1Y
4
2A
5
2B
6
2Y
7
GND
1B
14
13
12
Vcc
4A
11
4Y
10
3B
9
3A
8
3Y
4B
INPUTS
OUTPUTS
PR
CLR
CLK
D
Q
Q
L
H
H
L
H
Q
O
H
L
H
H
L
Q
O
X
X
X
H
L
X
X
X
X
f
f
L
H
L
L
H
H
H
L
H
L
H
H
H
1
2
3
4
5
6
7
1CLR
1D
1CK
1PR
1Q
1Q
GND
14
13
12
11
10
9
8
VCC
2CLR
CLR
2D
D
2CK
CK
2PR
PR
2Q
2Q
Q
Q
CLR
D
CK
PR
Q
Q
1A
1B
1
1Q
2Q
2 Cext
2 Rext / Cext
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
Vcc
1 Rext / Cext
Cext
1Q
2Q
CLR
2B
2A
CLR
Q
Q
Q
Q
CLR
1
2
3
4
5
6
7
A
A
Select
Enable
Output
Output
B
B
C
C
G2A
G2A
G2B
G2B
G1
G1
Y7
Y7
Y5
Y4
Y3
Y2
Y1
Y0
Y6
16
15
14
13
12
11
10
Vcc
YO
Y1
Y2
Y3
Y4
Y5
8
GND
9
Y6
1
2
3
4
5
6
7
3
Data
Inputs
2
1
0
Y
W
Strobe
16
15
14
13
12
11
10
Vcc
4
5
6
7
A
B
8
GND
9
C
Outputs
Data
Inputs
Data
Select
D3
D4
D5
D6
D7
A
B
C
D2
D1
D0
Y
W
S
1
2
3
4
5
6
7
1G SELECT
STROBE B
OUTPUT 1Y
1G
IC3
IC2
IC1
IC0
1Y
16
15
14
13
12
11
10
Vcc
SELECT 2G
STROBE A
8
GND
9
OUTPUT 2Y
2C0
2Y
2C1
2C2
2C3
2G
B
B
B
B
A
A
A
A
DATA
INPUTS
DATA
INPUTS
1
2
3
4
5
6
7
SELECT
1A
1A
1B
1B
1Y
1Y
2A
2A
2B
2B
2Y
2Y
16
15
14
13
12
11
10
Vcc
STROBE
G
4A
S3
Y
4A
4B
4B
4Y
4Y
3A
3A
3B
3B
8
GND
9
3Y